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Makefile
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Makefile
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#
# Makefile for simple RISC-V boot code for the GD32VF103 chip
#
# Example makes use of the GD32VF103 firmware library
#
# Authored by [email protected]
#
CROSS_COMPILE=riscv32-unknown-elf-
CC=$(CROSS_COMPILE)gcc
AS=$(CROSS_COMPILE)gcc
LD=$(CROSS_COMPILE)gcc
OBJCOPY=$(CROSS_COMPILE)objcopy
OBJDUMP=$(CROSS_COMPILE)objdump
SIZE=$(CROSS_COMPILE)size
LIBGCC=${shell ${CC} ${CFLAGS} -print-libgcc-file-name}
LIBC=${shell ${CC} ${CFLAGS} -print-file-name=libc.a}
LIBM=${shell ${CC} ${CFLAGS} -print-file-name=libm.a}
SOURCES= \
startup.S \
startup.c \
main.c \
retarget.c \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/Source/gd32vf103_gpio.c \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/Source/gd32vf103_rcu.c \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/Source/gd32vf103_usart.c \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/system_gd32vf103.c \
external/GD32VF103_Firmware_Library/Firmware/RISCV/drivers/n200_func.c \
external/GD32VF103_Firmware_Library/Template/systick.c
OBJECTS= \
$(patsubst %.c,%.c.o,$(patsubst %.S,%.S.o,$(SOURCES))) \
$(LIBGCC) \
$(LIBC) \
$(LIBM)
LSCRIPT=gd32vf103.ld
CFLAGS:=-Wall -g -Wno-main -Wstack-usage=400 -ffreestanding -Wno-unused -nostdlib
CFLAGS+=-fno-builtin-printf -march=rv32imac -mabi=ilp32 -mcmodel=medany
CFLAGS+=-Iexternal/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/Include
CFLAGS+=-Iexternal/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral
CFLAGS+=-Iexternal/GD32VF103_Firmware_Library/Template
CFLAGS+=-Iexternal/GD32VF103_Firmware_Library/Firmware/RISCV/drivers
CFLAGS+=-DGD32VF103C_START
ASFLAGS:=$(CFLAGS)
LDFLAGS:=-T $(LSCRIPT) -Wl,-gc-sections -Wl,-Map=firmware.map -nostdlib -march=rv32imac -mabi=ilp32 \
-mcmodel=medany -ffunction-sections -fdata-sections
all: $(SOURCES) firmware.bin
firmware.bin: firmware.elf
$(OBJCOPY) -O binary $^ $@
$(SIZE) $<
firmware.elf: $(OBJECTS) $(LSCRIPT)
$(LD) $(LDFLAGS) $(OBJECTS) -o $@
%.c.o: %.c
$(CC) -c $(CFLAGS) $< -o $@
%.S.o: %.S
$(CC) -c $(CFLAGS) $< -o $@
firmware.S: firmware.elf
$(OBJDUMP) --disassemble-all $< > $@
clean:
rm -f firmware.bin firmware.elf firmware.map *.o \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/*.o \
external/GD32VF103_Firmware_Library/Firmware/GD32VF103_standard_peripheral/Source/*.o \
external/GD32VF103_Firmware_Library/Firmware/RISCV/drivers/*.o \
external/GD32VF103_Firmware_Library/Template/*.o \
firmware.S
.PHONY: all clean